code: def _save_plus_one_saved_model_v2(path):
      obj = tf.train.Checkpoint()
  
      @tf.function(
          input_signature=[tf.TensorSpec(None, dtype=tf.float32)]
      )
      def plus_one(x):
          return x + 1
  
      obj.__call__ = plus_one
      tf.saved_model.save(obj, path)
  
file_path: hub/tensorflow_hub/module_v2_test.py
imports: import os
  from absl.testing import parameterized
  import tensorflow
  from tensorflow_hub import module_v2
label_desc: Use image node_id 1 for calling a global function with example usage: _save_plus_one_saved_model_v2(path) and returns: unknown